Equine Piroplasmosis and
the 2010 World Equestrian Games
Veterinary Services
Animal and Plant Health Inspection Service
U.S. Department of Agriculture
May 2008
1
Table of Contents
Acknowledgements ......................................................................................................................................................3
Introduction .................................................................................................................................................................4
What is equine piroplasmosis (EP)?...........................................................................................................................4
What ticks spread EP? ................................................................................................................................................4
What countries are affected?......................................................................................................................................4
Has the United States been affected before? .............................................................................................................5
What are the risks of the United States becoming affected?....................................................................................5
What are we doing to prevent the introduction of EP?............................................................................................6
What are EP-related issues for hosting equine events?............................................................................................7
What did the risk evaluation of EP-positive horses participating in the WEG in 2010 show?.............................7
Where can I find out more about the WEG? ............................................................................................................9
Where can I find out more about EP? .................................................................